Which of the following compounds has the highest boiling point? IV Multiple Choice II IV

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Q. 15
**Question:**

Which of the following compounds has the highest boiling point?

**Structural Formulas:**

- **I:** A branched alkane with the structural formula indicating a tertiary butyl group.
- **II:** A straight-chain alkane with five carbon atoms.
- **III:** A branched alkane with a single methyl group attached to a four-carbon chain.
- **IV:** A straight-chain alkane with four carbon atoms.

**Multiple Choice Options:**

- ○ I
- ○ II
- ○ III
- ○ IV

**Explanation of Concepts:**

In general, the boiling point of hydrocarbons is influenced by the structure of the molecule. Straight-chain alkanes typically have higher boiling points than their branched counterparts due to increased surface area, which enhances van der Waals forces. Among similar molecular weight compounds, the least branched or most linear structure typically results in the highest boiling point.
Transcribed Image Text:**Question:** Which of the following compounds has the highest boiling point? **Structural Formulas:** - **I:** A branched alkane with the structural formula indicating a tertiary butyl group. - **II:** A straight-chain alkane with five carbon atoms. - **III:** A branched alkane with a single methyl group attached to a four-carbon chain. - **IV:** A straight-chain alkane with four carbon atoms. **Multiple Choice Options:** - ○ I - ○ II - ○ III - ○ IV **Explanation of Concepts:** In general, the boiling point of hydrocarbons is influenced by the structure of the molecule. Straight-chain alkanes typically have higher boiling points than their branched counterparts due to increased surface area, which enhances van der Waals forces. Among similar molecular weight compounds, the least branched or most linear structure typically results in the highest boiling point.
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